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Unformatted text preview: NAME KEY DATE PERIOD Cell Membrane Coloring Worksheet Composition of the Cell Membrane c9 Funcﬂans The cell membrane is also called The _PLASMA
membrane and is made of a phospholipid _BILAYER_. The
phospholipids have a hydrophilic (waTer aTTracTing) _HEAD_ and Two
hydrophobic (waTer repelling) _TAILS_. The head of a phospholipid
is made of an alcohol and P_ group, while The Tails are chains
of FAs . Phospholipids can move _FREELY_ and allow
waTer and oTher _SMALL_ molecules To pass Through inTo or ouT of The
cell. This is known as simple _DIFFUSION_ because iT does noT
require _ENERGY_ and The waTer or molecules are moving _DOWN_
The concenTraTion gradienT. SKETCH AND LABEL a phospholipid
coloring The heads red and The Tails blue. PHOSPHOLIPID (a) Phospholipid rnolecule
\ u polar I
head I I'IOhFTJDIaI'
[ails AnoTher Type of lipid in The cell membrane is _CHOLESTERAL_
ThaT mcéléfegamgmgmébrane more fluid. Embedded in The phospholipid
bilayer areiP QTEINS_ ThaT also aid in diffusion and in cell
recogniTion. ProTeins called _INTEGRAL_ proTeins go all The way
ThFJIEhThe bilayer, while _PERIPHERAL_ proTeins are only on one
side. InTegral proTeins are also called _CHANNEL_ proTeins. Large
molecules like _LIPIDS_ or carbohydraTes use proTeins To help move
across cell membranes. Some of The membrane proTeins have
carbohydraTe _RECEPTORS_ aTTached To help cells in recognize each
oTher and cerTain molecules. LisT 4 funcTions of The cell or plasma membrane: 1 6i0lQo‘KYUﬂC'l—ION a. _Cell membranes help organisms maintain homeostasis by
controlling what substances may enter or leave cells_ b. _exchange materials such as food, water, & wastes with
its environment_ c. _water, oxygen, & carbon dioxide can move in and out
freely_ d. _is semi—permeable or selectively permeable only allowing certain molecules to pass through_ Correctly color code and identify the name for each part of the cell
membrane. Letter Name/Color Letter Name/Color _A_ Phospholipid bilayer (no _C_ Peripheral protein
color) (red) _ _ Integral protein (pink) _AC__ Cholesterol (blue) _AB_ Fatty acid tails _D_ Glycoprotein (green)
(orange) _AD_ Phosphate heads _E_ Glycolipids (purple)
(yellow) March the cell membrane structure or its function with the correct
letter from the cell membrane diagram. Letter Structure/Function Letter Structure/Function _AD_ Attracts water _AB_ Repels water
_AC_ Helps maintain _A_ Make up the bilayer
flexibility of membrane
_C_ Involved in cell-to-cell _B_ Help transport certain
recognition materials across the cell
membrane Osmosis and Tonic/Ty Define osmosis. _MOVEMENT OF WATER DOWN CONCENTRATION
GRADIENT_ In which direction does water move across membranes, up or down the
concentration gradient? DOWN
Define these 3 terms: a. isotonic— _CELL IS EQUILIBRIUM— 3 b. hypertonic _CELL IS IN SOLUTION THAT HAS A LOWER
CONC OF WATER, CAUSING CELL TO
SHRINK c. hypotonic _CELL IS IN SOLUTION THAT HAS A HIGHER
CONC OF WATER, CAUSING THE CELL TO
SWELL_ Use arrows to show the direction of water movement into or out
of each cell. Color and label the cell in an isotonic environment light blue, the hypotonic environment yellow, and the hypertonic environment
light green. 95‘1": WATER as?) WATER 100% WATER
HYPERTONIC ISOTONIC HYPOTONIC March the description or p/‘cfure with The osmaﬁc condiﬁon: solution with a lower solute concentration solution in which the solute concentration is the same
condition plant cells require condition that animal cells require A. Isorom'c _C—
_A_
_C—
_A_
6'. Hypofom'c _C_ red blood cell bursts (cytolysis)
_B_
_B_
_C—
_C— B. Hyperrom‘c plant cell loses turgor pressure (Plasmolysis)
solution with a higher solute concentration
plant cell with good turgor pressure solution with a high water concentration Label the fonicify for each solution (isotonic, hypofonic, or
hyperfonic): Ilium,I l._~_.l. ._ .-."ii”|-|E-«.-1 IL
P" —' \ I Hi-
'. ILI‘I ‘ll _Ill- ' -.- -
" I-..I_.i 'nl"'_' ,l-"IH L _HYPO _
Transporf Requiring Energy
What type of transport is represented by the following picture?
_ACTIVE What energy is being used? _ATP _ In which direction (concentration gradient), is the movement
occurring? _AGAINST(UP)__ Color the internal environment of the cell yellow. Color and Label the
transport proteins red and the substance being moved blue. OUTSIDE CELL One Type of acTive TransporT is called The _Na/K_ pump which helps
muscle cells conTracT. This pump uses _ENERGY_ To move ions ____UP The concenTraTion gradienT. The proTein ThaT is used To pump
The ions Through is called a _CARRIER_ proTein and iT changes iTs
_SHAPE_ To move The ions across The cell membrane. Label and
color The carrier proTeins red and The ions green. M}? Iii}: ® INST]? 3MB ...
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